Gas regulator



GAS REGULATon 4Filed March 14, 1925 Patented Jan. 26, 1926. i

UNITED STATES f 1,570,881 PATENT OFFICE.

HUBERT A. ELKINS, F MIDKIFF, Wns'rv VIRGINIA.

- GAS REGULATOR.

Application filed March 14, 1925. Serial No. 15,547.

The present invention appertains to a *gas` regulator, and has for itsprincipalobject to provide a valve structure which will close when thepressure of the gas `from the source of supply diminishes to a certainpredetermined point.

Another important object of the invention is to provide a gas regulatorof this nature. 'wherein the valve structureI will Yremain closed whenonce having been actuated to a closed positionY until'it ismanuallyoperated to an open position, thus preventing the escape of gas throughan open burner or the like should the flame thereof have been previouslyput out by the diminishing of the pressure.

A still further very important'object of the invention is to provide agas regulatoi of this nature which is simple in its construction,efficient and reliable in its operation, one which is inexpensive toconstruct, not liable to readilyget out of order, strong, durable, andotherwise well adapted to the purpose for which it is designed.

IVith the above and numerous other objects in view as will appear as thedescrip-k tion proceeds, the invention resides in certain novel featuresof construction, and in the combination and arrangement of parts as willbe hereinafter more fully described and claimed.

In the drawing The figure is a sectional View through the improved gasregulator, embodying the features of my invention.

Referring to the drawing in detail, it will be seen that 1 designates acylinder which is closed at its ends by the heads 2 and 3 heldin placeby bolts 4 orv any other suit-able fastening elements. Pistons 5 and 6are slidably mounted within the cylinder 1 and are prevented fromrotating by projections 7 extending into slot 8 provided to extendlongitudinally lof the bottom of the cylinder 1. Frames9 and 10 projectfrom Vthe inner ends of pistons 5 and 6 respectively and are providedwith seatV portions 11 for receiving theends of a coiled spring whichnormaly hold the pistons 5 and 6 against the heads 2 and 3 respectivelyand holds the ends of the frames 9 and 10 separated.

A plate 13 is fixed to the cylinder, 1 on the bottom thereof byfastening elements to project beyond the end of the cylinder on whichthe head 3 is disposed. A vertically disposed cylinder 15 is mounted onthe plate 13 having its upper end closed by a cap 16. A rod 17 isslidable through the cap 16 into the cylinder 15 and a, slide valveplunger 18 is mounted on the inner end' thereof, thev cylinder 15 actingas a valve casing.

This cylinder 15 is provided with van intake opening 19 adjacent itslower end and v14 or in any other suitable manner so as an outletopening 20 adjacent its upper end.' A ipe 21 leading from a source o'fsupply o gas communicates with the opening 19 and a pipe 22 leads fromthe opening 20 to burners or the like. Y

A pipe 23 is connected to the pipe 21 and extends through the head 2,and a branch 2A of this pipe 23 extendsthrough the head 3. A stndard 25rises from the cylinder 1 and rockably supports a lever 26 which isprovided with a pin and slot connection 27 with the rod 17 at one end.

Adjacent the other end a link 28 is pivotally connected to the lever anditis pivotally connected to a slide bar 29 slidably mounted through a.transversely extending opening 30 in the cylinder 1 at a center pointthereof. Thisslide 29 is adapted to be disposed between the frames 9 and10 so as to hold the pistons y5 and 6 at the ends of the cylinder 1.

A coil spring 31 is mounted in the bottom Of the cylinder 15 andimpinged upwardly against the bottom of .theplungcr valve 18. In orderto open the regulator so as to allow the ilow of gas, the handle 33 ofthe lever 26 is raised so as to lift the slide bar 29 from between theframes 9 and 10, thereby slmultaneously pushing the rod 17 downwardly soas to force the valve 18 past the opening 19, that is below the opening19 and therefore the gas is free to flowthrough the pipe 21, cylinder15, opening 2O and pipe 22. The pressure will be delivered through Vpipe23 and branch 24 so as to force the pistons 5 and 6 toward each otheruntil the frames 9Vand 10 abut so that the side bar 29 may rest thereon.

Now should the pressure in .the line 21 decrease beyond Va certainpoint, it will be seen that the spring 12 will be sutheiently strong toforce the pistons 5 and 6 away from each other so that the slide bar 29may gravitate down between these frames 9 and 10, thereby lifting up onthe slide valve 18 so as 'to raise it above the opening 19 and shut ofllthe gas. V Should the pressure rise, it cannot force the pistons 5 and 6toward each other because the slide bar 29 is disposed between theframes 9 and 10 and thus should the burners in communication with pipe21 go out after the pressure has decreased, there will be no danger ofthe gas being turned on when the pressure is again increased.

rIhis is of the utmost importance and will be immediately appreciated bythose familiar with natural gas or gases wherein pressure has a tendencyto decrease from time to time.

It will be apparent from the above that the embodiment of the inventionwhich I have disclosed herewith by way of example is simple inconstruction, cliicient and reliable in operation, and attains all thefeatures of advantage enumerated as desirable in the statement of theinvention and the above description, aud it will further be apparentthat numerous chan-ges in the details of construction, and in the'combination and arrangement ot' parts may be resorted to withoutdeparting from the spirit or scope of the invention as hereinafterclaimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is In a gasregulator, a valve structure in the gas line, a cylinder', a pair ofpistons in the cylinder, frames on the inner ends of the pistons, aslide bar extending through the cylinder between the pistons, springmeans between the trames tending to normally hold the pistons on theends ot' the cylinders, pipes connecting the gas line with the ends of`the cylinder' so that the pressure will tend to maintain the pistonstoward each other with the trames in abutment .so that the slide bar mayrest thereon, a. lever for operating the valve, and a linl; connectingthe slide bar to the lever so that the valve will be opened when theslide bar rests on the frames and so that the valve will be closed whenthe slide bar .is disposed between the frame.

In testimony whereof I a'llix my signature.

HUBERT A. ELKINS.

